空气离心式离合器主要结构参数的确定

以传递和扭矩和工作转速为设计条件，推导并建立了空气离心式离合器的承载能力方程式及其求解方法，并在此基础上提出了确定该种离合器主要结构参数的具体设计方法和步骤。使其更便于在实际中推广和应用。     

济钢自动化产业发展模式的探讨

经过多年发展,济钢信息自动化在技术和管理等方面积累了诸多优势。高起点、高标准,以自动化部为核心,整合信息自动化技术力量,充分发挥信息自动化技术资源优势,在确保＂对内不断提升信息自动化管理、规划、建设、运维的能力和水平,确保系统安全稳定运行,促进系统应用不断深化挖潜和优化提升＂的基础上,赋予新型的管理体制和管理机制,大力发展以系统集成、以软带硬、信息化与自动化相结合的高科技产业,为济钢创造更多的经济效益和社会效益。     

Radionuclides in primary coolant of a fluoride salt-cooled high-temperature reactor during normal operation

The release of fission products from coated particle fuel to primary coolant,as well as the activation of coolant and impurities,were analysed for a fluoride salt-cooled high-temperature reactor (FHR) system,and the activity of radionuclides accumulated in the coolant during normal operation was calculated.The release rate (release fraction per unit time) of fission products was calculated with STACY code,which is modelled mainly based on the Fick's law,while the activation of coolant and impurities was calculated with SCALE code.The accumulation of radionuclides in the coolant has been calculated with a simplified model,which is generally a time integration considering the generation and decay of radionuclides.The results show that activation products are the dominant gamma source in the primary coolant system during normal operation of the FHR while fission products become the dominant source after shutdown.In operation condition,health-impacts related nuclides such as 3H,and 14C originate from the activation of lithium and coolant impurities including carbon,nitrogen,and oxygen.According to the calculated effective cross sections of neutron activation,6Li and 14N are the dominant 3H production source and 14C production source,respectively.Considering the high production rate,3H and 14C should be treated before being released to the environment.     

An improved outer pipe method for expansive pressure measurement of static cracking agentsOA

Static cracking agent(SCA) is actively investigated as an alternative to explosive blasting for rock breakage due to its immense expansion property. SCA can eliminate the negative effects of shock, noise and harmful gases encountered in explosive blasting processes. Accurate measurement and deep understanding of the expansive properties of SCAs are important in their industrial application. An improved outer pipe method(OPM), termed the upper end surface method(UESM), is proposed in this paper t...     

西南地区低温过程特征及与MJO指数的关系

本文选取1979年~2008年西南地区76个台站的逐日最低气温和MJO指数资料,采用累积频率法和线性倾向估计,研究了单站和区域持续性低温过程的变化特征及其与MJO指数的关系。     

配电自动化系统分析及改进方案

配电网是电力网络中直接面向电力用户的一个环节,是检测供电可靠性的重要部分。配电自动化的广泛应用,为调度运行控制能力、故障处理能力和配网检修能力的提高奠定了基础,也对社会保电活动等提供可信的技术手段和技术措施,极大减少停电次数和停电时间。本文结合西咸新区供电公司成立后的配电网规划,对配电网的发展现状、存在的问题进行分析,并从主站信息和馈电线路方面提出了切实有效的改进方案。     

Martensitic stabilization and defects induced by deformation in TiNi shape memory alloys

Martensitic stabilization caused by deformation in a TiNi shape memory alloy was studied.Special attention was paid to the deformed microstructures to identify the cause of martensitic stabilization.Martensitic stabilization was demonstrated by differential scanning calorimetry for the tensioned TiNi shape memory alloy.Transmission electron microscopy revealed that antiphase boundaries were formed because of the fourfold dissociation of[110]B19'super lattice dislocations and were preserved after reverse transformation due to the lattice correspondence.Martensitic stabilization was attributed to dislocations induced by deformation,which reduced the ordering degree of the microstructure,spoiled the reverse path from martensite to parent phase compared with thermoelastic transformation,and imposed resistance on phase transformation through the stress field.     

驱油流体吸附抑制剂的合成与评价

目的在化学驱的实施过程中,地层对驱油剂的吸附滞留是表面活性剂进入地层后含量损失的一种主要原因,为了减少驱油流体在地层的损耗成本而展开对驱油液体吸附抑制剂的研究。 方法以二氰二胺(DCD)、1-十八胺盐酸盐(OHC)为原料,基于亲核加成的原理采用熔融法在150 ℃下合成了一种针对驱油流体的吸附抑制剂OHCB,该表面活性剂同时具备强疏水基、强极性原子和阳离子基团,因此具有较强的占据黏土矿物表面吸附位点的能力。对其进行了红外吸收、紫外吸收、元素分析、质谱等结构表征,采用静态吸附法研究了其作为添加剂的最佳配比,并验证在最佳配比下对驱油剂AEO7的吸附抑制效果,以及该体系相较AEO7单一体系的静态洗油效率、乳化性及润湿性的变化。 结果OHCB抑制驱油剂AEO7在黏土矿物表面的吸附效果较好,在驱油剂与吸附抑制剂质量比为5∶1的情况下,抑制效果可达27%以上。 结论OHCB不仅具有较好的吸附抑制效果,且其加入使AEO7的静态洗油效率提升至27.3%、γ_cmc降至27.1 mV/m,CMC降至38 mg/L、油-水界面张力降至0.5 mV/m以下,对体系性能起到了协同增效的作用,并且相较于需要预吸附的牺牲剂,其使用更为便捷。 